Aroma humidifier



FIG. 1 is a perspective view of an aroma humidifier showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof; and,

FIG. 7 is a bottom view thereof.

The broken lines in the drawings represent portions of the aroma humidifier and form no part of the claim. 

CLAIM The ornamental design for an aroma humidifier, as shown and described. 